Standard1" format. Thermal/magnetic tripping mechanism. 120/240 Vac. 10,000 AIR. Quick make, quick break. For use with meter mains and combination service entrance devices. #4 - 2/0 AWG wire range. U.L. Listed, HACR rated. This 100 Amp Main Breaker is one of many top quality items in our 100 Amp Double department.
